Search each one of them up on GOOGLE it’s easier trust me
Answer: The acceleration of the object is 0.67m/s^2 west.
Explanation: Here we are given the initial velocity and final velocity as well as the time taken. Acceleration is the change in velocity per unit time, thus the equation becomes.
a=dv/t
a=vf-vi/t
a=-2.1-4.7/3.9
a= 0.66m/s^2 west
Answer:
<h3>law</h3>
Explanation:
The law of conservation of energy states that the total amount of energy in a system remains constant.
Σ/ε
σ = F/A
ε = ΔL/L
F = force
A = area
L = lenght
ΔL = |old lenght - new lenght|
<u>Answer:</u>
<em>The property helps to explain this difference is forces between molecules.</em>
<em>Option c</em>
<u>Explanation:</u>
The exact heat of water is 
The exact heat of methane is 
This is due to the polarity and the hydrogen bonding.
It takes more energy to break these bonds than methane, therefore, we would think water to have a higher specific heat due to these active forces.
<em>So this property helps to explain there is differences in forces between molecules.</em>